High resolution pulse distortion precompensation in nanosecond Ytterbium-doped fiber amplifiers

摘要

We present a fibered master oscillator power amplifier system which allows generation of multi-μJ narrow-bandwidth few nanosecond pulses with active pulse shape control. Temporal shaping is demonstrated with sub-nanosecond resolution and high dynamic. In order to precompensate gain saturation, input optimal pulse shaping is calculated using a numerical model including ASE and feed-back algorithm.